Patinya Karoh, Maiko K. Okajima, Tatsuo Kaneko, Thapakorn Tree-Udom
Front Cover: The combination of disaccharide trehalose and magasaccharide sacran in composite xerogel films effectively preserves vitamin C in a dry state. The cross-section FE-SEM images confirmed the presence of intercalated layered structures, supporting the existence of a striped structure with numerous lines along the longitudinal axis. Upon immersion in water, they exhibit anisotropic swelling behavior, releasing vitamin C preferentially from the edges, aiding dynamic control in sustained delivery systems. More details can be found in article 2400125 by Thapakorn Tree-Udom and co-workers.
{"title":"Efficient Stabilization and Directional-Controlled Release of Vitamin C in Disaccharide/Megasaccharide Composite Xerogels","authors":"Patinya Karoh, Maiko K. Okajima, Tatsuo Kaneko, Thapakorn Tree-Udom","doi":"10.1002/macp.202470040","DOIUrl":"https://doi.org/10.1002/macp.202470040","url":null,"abstract":"<p><b>Front Cover</b>: The combination of disaccharide trehalose and magasaccharide sacran in composite xerogel films effectively preserves vitamin C in a dry state. The cross-section FE-SEM images confirmed the presence of intercalated layered structures, supporting the existence of a striped structure with numerous lines along the longitudinal axis. Upon immersion in water, they exhibit anisotropic swelling behavior, releasing vitamin C preferentially from the edges, aiding dynamic control in sustained delivery systems. More details can be found in article 2400125 by Thapakorn Tree-Udom and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 20","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202470040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Achilleas Pipertzis, Athanasios Skandalis, Stergios Pispas, George Floudas
Front Cover: In article 2400180 by Achilleas Pipertzis, Athanasios Skandalis, Stergios Pispas, and George Floudas, the nanophase separation in amphiphilic diblock copolymers with a densely grafted macromolecular architecture, was shown to drive heterogeneous dynamics as evidenced by small-angle X-ray scattering, differential scanning calorimetry, and dielectric spectroscopy.
封面：Achilleas Pipertzis、Athanasios Skandalis、Stergios Pispas 和 George Floudas 在第 2400180 号文章中指出，通过小角 X 射线散射、差示扫描量热和介电质谱分析，可以证明具有高密度接枝大分子结构的两亲性二嵌段共聚物中的纳米相分离驱动了异质动力学。
{"title":"Nanophase Segregation Drives Heterogeneous Dynamics in Amphiphilic PLMA-b-POEGMA Block-Copolymers with Densely Grafted Architecture","authors":"Achilleas Pipertzis, Athanasios Skandalis, Stergios Pispas, George Floudas","doi":"10.1002/macp.202470038","DOIUrl":"https://doi.org/10.1002/macp.202470038","url":null,"abstract":"<p><b>Front Cover</b>: In article 2400180 by Achilleas Pipertzis, Athanasios Skandalis, Stergios Pispas, and George Floudas, the nanophase separation in amphiphilic diblock copolymers with a densely grafted macromolecular architecture, was shown to drive heterogeneous dynamics as evidenced by small-angle X-ray scattering, differential scanning calorimetry, and dielectric spectroscopy.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 19","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202470038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142404377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, a flexible sensor is successfully fabricated using self-healing nanocomposite hydrogels for monitoring human movement. The eco-friendly cellulose nanocrystals (CNCs) are used as nano-reinforcing materials, and the mechanical properties and self-healing efficiency of the materials are improved. The self-healing efficiency of hydrogels are realized by introducing a variety of reversible non-covalent interactions such as hydrogen bonding, borax chelation, and metal coordination. Notably, the mechanical strength and self-healing efficiency of these nanocomposite hydrogels can reach 2.8 MPa and 89.9%, respectively. Importantly, these self-healing nanocomposite hydrogels have been widely used in wearable flexible sensors to achieve high sensitivity to large-scale human movement. It is of great significance to design functional materials with good biocompatibility, sensitivity, and mechanical strength for wearable sensors.
{"title":"Fabrication of Nanocomposite Hydrogels Based on Cellulose Nanocrystals and Multi-Walled Carbon Nanotubes for Human Motion Monitoring","authors":"Jiarui Liu, Lulu Wang, Liangjiu Bai, Wenxiang Wang, Lixia Yang, Hou Chen, Huawei Yang, Donglei Wei","doi":"10.1002/macp.202400207","DOIUrl":"https://doi.org/10.1002/macp.202400207","url":null,"abstract":"<p>In this study, a flexible sensor is successfully fabricated using self-healing nanocomposite hydrogels for monitoring human movement. The eco-friendly cellulose nanocrystals (CNCs) are used as nano-reinforcing materials, and the mechanical properties and self-healing efficiency of the materials are improved. The self-healing efficiency of hydrogels are realized by introducing a variety of reversible non-covalent interactions such as hydrogen bonding, borax chelation, and metal coordination. Notably, the mechanical strength and self-healing efficiency of these nanocomposite hydrogels can reach 2.8 MPa and 89.9%, respectively. Importantly, these self-healing nanocomposite hydrogels have been widely used in wearable flexible sensors to achieve high sensitivity to large-scale human movement. It is of great significance to design functional materials with good biocompatibility, sensitivity, and mechanical strength for wearable sensors.</p>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 21","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Front Cover: Reactively processed multilayered films comprising PBAT nanocomposites not only achieve improved oxygen barrier and dimensional stability at high temperatures but also achieve a higher biodegradation than the neat PBAT film with a similar thickness. The soil–compost mixture after biodegradation of the films is nontoxic. Therefore, the reactively processed composite is a sustainable polymeric material with superior properties and may find packaging or biomedical applications where existing materials cannot be recycled. More details can be found in the article 2400067 by Suprakas Sinha Ray and co-workers.
封面：由 PBAT 纳米复合材料组成的反应加工多层薄膜不仅提高了高温下的氧气阻隔性和尺寸稳定性，而且与厚度相似的纯 PBAT 薄膜相比具有更高的生物降解性。薄膜生物降解后的土壤-堆肥混合物是无毒的。因此，经过反应加工的复合材料是一种可持续发展的聚合物材料，具有优异的性能，可用于现有材料无法回收的包装或生物医学领域。更多详情可参阅 Suprakas Sinha Ray 及其合作者发表的文章 2400067。
{"title":"Front Cover: Macromol. Chem. Phys. 18/2024","authors":"","doi":"10.1002/macp.202470036","DOIUrl":"https://doi.org/10.1002/macp.202470036","url":null,"abstract":"<p><b>Front Cover</b>: Reactively processed multilayered films comprising PBAT nanocomposites not only achieve improved oxygen barrier and dimensional stability at high temperatures but also achieve a higher biodegradation than the neat PBAT film with a similar thickness. The soil–compost mixture after biodegradation of the films is nontoxic. Therefore, the reactively processed composite is a sustainable polymeric material with superior properties and may find packaging or biomedical applications where existing materials cannot be recycled. More details can be found in the article 2400067 by Suprakas Sinha Ray and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 18","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202470036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the rapid development of the internet of things, the simple preparation of sensors has become a challenge. The present work presents the simple preparation of flexible sensors by using the fused deposition modeling (FDM) 3D printing combined with the microwave radiation‐assisted treatment of the thermoplastic polyurethane (TPU) with carbon nanotubes (CNTs) as conductive fillers to create the flexible sensors. The as‐prepared TPU/CNT composites exhibit the 7.27 MPa tensile strength and 401% elongation at break, similar to those of the pure TPU. After 200 tensile cycles, the TPU/CNT composites can still stably convert pressure into electrical signals, which can be used as flexible sensors with high sensitivity (0.879 kPa−1). In addition, shoe insoles and finger cover with sensing performance are fabricated through the FDM 3D printing technology, demonstrating the potential of the sensors to monitor human gait, finger straightening, and bending movements. The as‐proposed method involves the embedding CNTs as conductive fillers on the surface of TPU to form the TPU/CNT composite conductive layers on the surface of TPU, which is beneficial for maintaining the elasticity of the polymer matrix. The challenges in preparing stable, low‐cost, and scalable flexible sensors and highlights of the advantages of 3D printing technology in manufacturing flexible piezoresistive sensors are also deeply discussed.
随着物联网的快速发展，传感器的简单制备已成为一项挑战。本研究采用熔融沉积建模（FDM）3D 打印技术，结合微波辐射辅助处理热塑性聚氨酯（TPU）与碳纳米管（CNT）作为导电填料，简单制备出柔性传感器。制备的热塑性聚氨酯/碳纳米管复合材料的拉伸强度为 7.27 兆帕，断裂伸长率为 401%，与纯热塑性聚氨酯相似。经过 200 次拉伸循环后，热塑性聚氨酯/碳纳米管复合材料仍能稳定地将压力转化为电信号，可用作高灵敏度（0.879 kPa-1）的柔性传感器。此外，还通过 FDM 3D 打印技术制作了具有传感性能的鞋垫和手指套，证明了传感器在监测人体步态、手指伸直和弯曲运动方面的潜力。拟议的方法是将 CNT 作为导电填料嵌入热塑性聚氨酯表面，在热塑性聚氨酯表面形成热塑性聚氨酯/CNT 复合导电层，这有利于保持聚合物基体的弹性。此外，还深入讨论了制备稳定、低成本、可扩展的柔性传感器所面临的挑战，并重点介绍了 3D 打印技术在制造柔性压阻传感器方面的优势。
{"title":"Microwave Radiation Assisted Construction of Fused Deposition Modeling 3D Printing Flexible Sensors","authors":"Xueling Hu, Yanling Zheng, Dhandapani Kuzhandaivel, Xiaohong Ding, Lixin Wu, Jianlei Wang, Xianliang Lin, Xiaoyong Hu, Xu Zhang","doi":"10.1002/macp.202400284","DOIUrl":"https://doi.org/10.1002/macp.202400284","url":null,"abstract":"With the rapid development of the internet of things, the simple preparation of sensors has become a challenge. The present work presents the simple preparation of flexible sensors by using the fused deposition modeling (FDM) 3D printing combined with the microwave radiation‐assisted treatment of the thermoplastic polyurethane (TPU) with carbon nanotubes (CNTs) as conductive fillers to create the flexible sensors. The as‐prepared TPU/CNT composites exhibit the 7.27 MPa tensile strength and 401% elongation at break, similar to those of the pure TPU. After 200 tensile cycles, the TPU/CNT composites can still stably convert pressure into electrical signals, which can be used as flexible sensors with high sensitivity (0.879 kPa<jats:sup>−1</jats:sup>). In addition, shoe insoles and finger cover with sensing performance are fabricated through the FDM 3D printing technology, demonstrating the potential of the sensors to monitor human gait, finger straightening, and bending movements. The as‐proposed method involves the embedding CNTs as conductive fillers on the surface of TPU to form the TPU/CNT composite conductive layers on the surface of TPU, which is beneficial for maintaining the elasticity of the polymer matrix. The challenges in preparing stable, low‐cost, and scalable flexible sensors and highlights of the advantages of 3D printing technology in manufacturing flexible piezoresistive sensors are also deeply discussed.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"40 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142265569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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